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Unified conditional arguments and replaced APC example

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This commit is contained in:
Nick Adams
2012-08-14 23:15:25 +12:00
parent 876ec7515d
commit 4f086c3aca
3 changed files with 11 additions and 15 deletions
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2
_posts/03-05-01-Command-Line-Interface.md
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@@ -22,7 +22,7 @@ Let's write a simple "Hello, $name" CLI program. To try it out, create a file na
{% highlight php %} {% highlight php %}
<?php <?php
if($argc != 2) { if ($argc != 2) {
echo "Usage: php hello.php [name].\n"; echo "Usage: php hello.php [name].\n";
exit(1); exit(1);
} }

11
_posts/05-03-01-Date-and-Time.md
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@@ -16,7 +16,7 @@ output.
$raw = '22. 11. 1968'; $raw = '22. 11. 1968';
$start = \DateTime::createFromFormat('d. m. Y', $raw); $start = \DateTime::createFromFormat('d. m. Y', $raw);
echo "Start date: " . $start->format('m/d/Y') . "\n"; echo 'Start date: ' . $start->format('m/d/Y') . "\n";
{% endhighlight %} {% endhighlight %}
Calculating with DateTime is possible with the DateInterval class. DateTime has methods like `add()` and `sub()` that Calculating with DateTime is possible with the DateInterval class. DateTime has methods like `add()` and `sub()` that
@@ -30,14 +30,14 @@ $end = clone $start;
$end->add(new \DateInterval('P1M6D')); $end->add(new \DateInterval('P1M6D'));
$diff = $end->diff($start); $diff = $end->diff($start);
echo "Difference: " . $diff->format('%m month, %d days (total: %a days)') . "\n"; echo 'Difference: ' . $diff->format('%m month, %d days (total: %a days)') . "\n";
// Difference: 1 month, 6 days (total: 37 days) // Difference: 1 month, 6 days (total: 37 days)
{% endhighlight %} {% endhighlight %}
On DateTime objects you can use standard comparison: On DateTime objects you can use standard comparison:
{% highlight php %} {% highlight php %}
<?php <?php
if($start < $end) { if ($start < $end) {
echo "Start is before end!\n"; echo "Start is before end!\n";
} }
{% endhighlight %} {% endhighlight %}
@@ -49,10 +49,9 @@ DateTime objects, start and end, and the interval for which it will return all e
// output all thursdays between $start and $end // output all thursdays between $start and $end
$periodInterval = \DateInterval::createFromDateString('first thursday'); $periodInterval = \DateInterval::createFromDateString('first thursday');
$periodIterator = new \DatePeriod($start, $periodInterval, $end, \DatePeriod::EXCLUDE_START_DATE); $periodIterator = new \DatePeriod($start, $periodInterval, $end, \DatePeriod::EXCLUDE_START_DATE);
foreach($periodIterator as $date) foreach ($periodIterator as $date) {
{
// output each date in the period // output each date in the period
echo $date->format('m/d/Y') . " "; echo $date->format('m/d/Y') . ' ';
} }
{% endhighlight %} {% endhighlight %}

11
_posts/10-03-01-Object-Caching.md
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@@ -28,15 +28,12 @@ Example logic using APC:
{% highlight php %} {% highlight php %}
<?php <?php
// check if there is data saved as 'expensive_data' in cache // check if there is data saved as 'expensive_data' in cache
$data = apc_fetch('expensive_data'); if (apc_fetch('expensive_data') === false) {
if (!$data) // data is not in cache; save expensive call for later use
{ apc_add('expensive_data', get_expensive_data());
// data not in cache, do expensive call and save for later use
$data = get_expensive_data();
apc_store('expensive_data', $data);
} }
print_r($data); print_r(apc_fetch('expensive_data'));
{% endhighlight %} {% endhighlight %}
Learn more about popular object caching systems: Learn more about popular object caching systems: